Package io.jmix.flowuidata.exception

Class UniqueConstraintViolationHandler

java.lang.Object

io.jmix.flowuidata.exception.UniqueConstraintViolationHandler

All Implemented Interfaces:

UiExceptionHandler

@Component("flowui_UniqueConstraintViolationHandler")
@Order(160)
public class UniqueConstraintViolationHandler
extends Object
implements UiExceptionHandler

Handles database unique constraint violations. Determines the exception type by searching a special marker string in the messages of all exceptions in the chain.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final String	DEFAULT_MESSAGE_PROPERTY
protected static final String	MESSAGE_PREFIX
protected Messages	messages
protected Notifications	notifications

Constructor Summary

Constructors

Constructor	Description
UniqueConstraintViolationHandler(Messages messages, Notifications notifications)

Method Summary

Modifier and Type	Method	Description
protected boolean	doHandle(UniqueConstraintViolationException exception)
protected String	getDefaultMessage(String constraintName)
protected String	getMessage(String constraintName)
boolean	handle(Throwable exception)	Handle an exception.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_MESSAGE_PROPERTY

protected static final String DEFAULT_MESSAGE_PROPERTY

See Also:

• Constant Field Values

MESSAGE_PREFIX

protected static final String MESSAGE_PREFIX

See Also:

• Constant Field Values

messages

protected Messages messages

notifications

protected Notifications notifications

Constructor Details

UniqueConstraintViolationHandler

public UniqueConstraintViolationHandler(Messages messages,
 Notifications notifications)

Method Details

handle

public boolean handle(Throwable exception)

Description copied from interface: UiExceptionHandler

Handle an exception. Implementation class should either handle the exception and return true, or return false to delegate execution to the next handler in the chain of responsibility.

Specified by:

handle in interface UiExceptionHandler

Parameters:

exception - throwable instance

Returns:

true if the exception has been successfully handled, false if not

doHandle

protected boolean doHandle(UniqueConstraintViolationException exception)

getMessage

protected String getMessage(String constraintName)

getDefaultMessage

protected String getDefaultMessage(String constraintName)